<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card>
            <div
                id="main"
                style="width: 750px;height:400px;"
            ></div>
        </el-card>
    </div>
</template>
 
<script>
import echarts from 'echarts'
import _ from 'lodash'
export default {
    data() {
        return {
            // 需要合并的数据
            options: {
                title: {
                    text: '用户来源',
                },
                tooltip: {
                    trigger: 'axis',
                    axisPointer: {
                        type: 'cross',
                        label: {
                            backgroundColor: '#E9EEF3',
                        },
                    },
                },
                grid: {
                    left: '3%',
                    right: '4%',
                    bottom: '3%',
                    containLabel: true,
                },
                xAxis: [
                    {
                        boundaryGap: false,
                    },
                ],
                yAxis: [
                    {
                        type: 'value',
                    },
                ],
            },
        }
    },
    created() {

    },
    // 此时，页面上的dom,已经被渲染完毕
    async mounted() {
        // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));

        const { data: res } = await this.$http.get('reports/type/1');
        if (res.meta.status !== 200) {
            return this.$message.error('获取折线图数据失败')
        }
        // 指定图表的配置项和数据

        const result = _.merge(res.data, this.options)

        // 使用刚指定的配置项和数据显示图表。
        myChart.setOption(result);
    },
    methods: {

    },
}
</script>
 
<style lang="less" scoped>
</style>